Handle unit of an interchangeable blade knife



FIG. 1 is a perspective of a handle unit of an interchangeable blade knife;

FIG. 2 is a front view of the handle unit of an interchangeable blade knife;

FIG. 3 is a top view of the handle unit of an interchangeable blade knife;

FIG. 4 is a rear view of the handle unit of an interchangeable blade knife;

FIG. 5 is a bottom view of the handle unit of an interchangeable blade knife;

FIG. 6 is a right side view of the handle unit of an interchangeable blade knife; and,

FIG. 7 is a left side view of the handle unit of an interchangeable blade knife.

The dashed broken line showing is included for the purpose of illustrating portions of the article that form no part of the claim. 

CLAIM The ornamental design for a handle unit of an interchangeable blade knife, as shown and described. 